Microparticles containing guaraná extract obtained by spray-drying technique: development and characterization

Klein, Traudi; Longhini, Renata; Bruschi, Marcos Luciano; Mello, João Carlos Palazzo de

doi:10.1016/j.bjp.2015.03.010

Cited by 36 publications

(21 citation statements)

References 21 publications

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“…The theoretical yield was calculated as 25.26 g considering initial amount of 20 g chitosan and 5.26 g of grafted ferulic acid (calculated from grafting ratio). The product yield can be considered satisfactory as similar yields for microencapsulation through spray drying were reported in recent literature (Klein et al 2015;Bastos et al 2012). Total encapsulation efficiency (TEE) was determined as ratio of actual content and theoretical content (2 g thiamine/pyridoxine in 25.26 g microspheres) of thiamine and pyridoxine per gram of the microspheres.…”

Section: Thiamine and Pyridoxine Loaded Microspheressupporting

confidence: 53%

Development of thiamine and pyridoxine loaded ferulic acid-grafted chitosan microspheres for dietary supplementation

et al. 2015

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Therapeutic potential of water soluble vitamins has been known for long and in recent times they are being widely supplemented in processed food. Phenolic acid-grafted chitosan derivatives can serve as excellent biofunctional encapsulating materials for these vitamins. As a proof of concept, thiamine and pyridoxine loaded ferulic acid-grafted chitosan microspheres were developed. Ferulic acid was successfully grafted on chitosan by a free radical mediated reaction and the structure was confirmed by FTIR and NMR analysis. When compared to FTIR spectra of chitosan, intensity of amide I (at around 1644 cm(-1)) and amide II (at around 1549 cm(-1)) bands in spectra of ferulic acid-grafted chitosan were found increased, indicating formation of new amide linkage. Strong signals at δ = 6.3-7.9 ppm corresponding to methine protons of ferulic acid were observed in NMR spectra of ferulic acid-grafted chitosan, suggesting the successful grafting of ferulic acid onto chitosan. Grafting ratio of the derivative was 263 mg ferulic acid equivalent/g polymer. Positively charged particles (zeta potential 31 mv) of mean diameter 4.5 and 4.8 μ, corresponding to number distribution and area distribution respectively were observed. Compact microspheres with smooth surfaces and no apparent cracks or pores were observed under scanning electron microscope. Efficient microencapsulation was further proved by X-ray diffraction patterns and thermal analysis. Preliminary anti-inflammatory activity of the vitamin-loaded microspheres was demonstrated.

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Section: Thiamine and Pyridoxine Loaded Microspheressupporting

confidence: 53%

Development of thiamine and pyridoxine loaded ferulic acid-grafted chitosan microspheres for dietary supplementation

et al. 2015

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“…Further temperature increase led to the second endothermic event in MD and GA thermograms, followed by exothermic effects above 250 °C due to melting and subsequent degradation of the two polymers, respectively. Above 250 °C, the A c c e p t e d M a n u s c r i p t thermograms of MD and GA showed exothermic processes connected to melting and subsequent degradation of these compounds (Klein et al 2015). The SMP also exhibited satisfactory thermal stability, a necessary property for carriers exposed to high process temperatures.…”

Section: Near Here]mentioning

confidence: 98%

Microencapsulation of anthocyanin-rich black soybean coat extract by spray drying using maltodextrin, gum Arabic and skimmed milk powder

Kalušević

Lević

Čalija

et al. 2017

Journal of Microencapsulation

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Black soybean coat is insufficiently valorised food production waste rich in anthocyanins. The goal of the study was to examine physicochemical properties of spray dried extract of black soybean coat in regard to carrier materials: maltodextrin, gum Arabic, and skimmed milk powder. Maltodextrin and gum Arabic-based microparticles were spherical and non-porous while skimmed milk powder-based were irregularly shaped. Low water activity of microparticles (0.31-0.33), good powders characteristics, high solubility (80.3-94.3%) and encapsulation yields (63.7-77.0%) were determined. All microparticles exhibited significant antioxidant capacity (243-386 μmolTE/g), good colour stability after three months of storage and antimicrobial activity. High content of total anthocyanins, with cyanidin-3-glucoside as predominant, were achieved. In vitro release of anthocyanins from microparticles was sustained, particularly from gum Arabic-based. These findings suggest that proposed simple eco-friendly extraction and microencapsulation procedures could serve as valuable tools for valorisation and conversion of black soybean coat into highly functional and stable food colourant.

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“…Klein et al (Klein et al 2015) observed no difference in the TGA curves for gum arabic and maltodextrin materials, and gum arabic/maltodextrin microparticle containing guaraná extract obtained by spray-drying technique, excluding any interference of the material in resistance to thermal degradation. The significant weight loss difference in the first stage can also be related to the morphology and particle size of the biopolymer.…”

Section: Resultsmentioning

confidence: 99%

Hygroscopic, Thermal and Chemical Properties of Cinnamon Essential Oil Microparticle Obtained by Spray Drying

et al. 2017

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This study aimed at evaluating the potential of gum arabic in combination with maltodextrin for the microencapsulation of cinnamon essential oil by spray drying to maximize its hygroscopic, thermal and chemical stability. The corresponding isotherm exhibited type II behavior (sigmoidal curve), and the best fit was obtained for the GAB model (E = 4.81%). Differential scanning calorimetry (DSC) analysis showed that the increased moisture content caused a significant reduction of the glass transition temperature (Tg) of the microparticles. Microparticles stored at intermediate humidity exhibited thermal stability and a lower mass loss, while storing at low temperatures led to higher antioxidant capacity and cinnamaldehyde retention.

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Microparticles containing guaraná extract obtained by spray-drying technique: development and characterization

Cited by 36 publications

References 21 publications

Development of thiamine and pyridoxine loaded ferulic acid-grafted chitosan microspheres for dietary supplementation

Development of thiamine and pyridoxine loaded ferulic acid-grafted chitosan microspheres for dietary supplementation

Microencapsulation of anthocyanin-rich black soybean coat extract by spray drying using maltodextrin, gum Arabic and skimmed milk powder

Hygroscopic, Thermal and Chemical Properties of Cinnamon Essential Oil Microparticle Obtained by Spray Drying

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